Inflation-valve for pneumatic tires.



A. E. HENDERSON. INFLATION VALVE FOR PNEUMATIC TIRES.

APPLICATION FILED AUG.20. I915.

Patented Nov. 16, 1915.

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ALBERT ENNIS HENDERSON, OF TORONTO, ONTARIO, CANADA, ASSIGNOR T0SUPERIOR TUBES AND ACCESSORIES, LIMITED, A CORPORATION OF CANADA.

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Specification of Letters Patent.

Patented Nov. 16, I915.

App1ication filed August 20, 1915. Serial No. 46,427.

To all whom it may concern:

Be it known that I, ALBERT ENNIS HEN- nnnson, a subject of the King ofEngland, residing at Toronto, in the county of York, Province ofOntario, and Dominion of Canada, have invented certain new and usefulImprovements in Inflation-Valves for Pneumatic Tires, of which thefollowing 1s a specification. reference being had therein to theaccompanying drawing.

This'invention relates to improvements 1n inflation valves for pneumatictires, one object of the invention being theprovision of a valve inwhich the clamping membersare so disposed having to have only limitedmovement relatively'to each other, the fixed member being insertiblethrough the opening in tube fromthe exterior of thetube, so that thebody of the tube may fit in between both clamping members to be lockedtherein by the usual locking nut mounted upon the stem This particularstem is designed for use in connection with the stem connection shownand set ,forth in my copending application filed even Serial No. 46,426.

In the accompanying drawings :Figure 1 is a longitudinal sectional viewof the complete valve and stem. Fig. 2 is a cross section through aninner tube w th the stem in place. Fig. 3 is a sectional view of amodified form, and Fig. 4 is a section taken on line of Fig. 1.

Referring to the drawings, the numeral 5 designates the body of themember, which is provided with the main bore 6,. the interiorly threadedportion 7, the shoulder 8 and the reduced bore 9. The valve seat car-.

16, for the valve 18, which in turn is carried by the stem 17 which alsocarries the button 20. This button 20 is cupped to receive one end ofthe coiled spring 22, which s'urrounds the stem 21 also carried by thebutton, and is. limited in its compressibility by the shoulder 8,against which it is held by date herewith thereon and be held fromturning, while permitted a limited longitudinal movement. The fixedhead,.disk or button 28 is riveted or burred as at 29 upon the end ofthe portion 24, afterthe member 26 is in place, and thus such member 26is at all times held upon the portion 24.

.The opposed faces of the members 26 and ,28 are provided withconcentric corrugations which provide a non-slipping gripper for thebody of the tube, as shown in Fig. 2. This particular-stem is adaptedfor use in connection with the structure shown in my copendingapplication Serial No; 46,426, wherein the stem is illustrated in courseof insertion from the exterior of the tube, the

button being forced through the stem receiving opening of the tube andthe material of 'the tube being clamped between the but.

ton 28 or 28' and the member 26 or 26.

In the construction shown in Fig. 3, the body 5' is rovided with theinter'iorly screw threaded ore 31, for the reception of the threadedportion 32 of the stem 24, which has the integral disk or button 28, andis provided with the bore 28, the member 26 being placed upon the stem24, before the same is screwed into the position as shown.

In both instances the lock nuts 30 and 30, are carried. upon the bodies5 and 5, and after-once placed thereondo not have to be entirelyremoved, as is the usual custom' with the stems which employ theclamping loo ing a limitingshoulder, a movable disk having an .aperture.fitting snugly yet slidably upon such reducedend of the stem, '11 fixeddisk mounted upon the terminal of the reduced end, the opposed faces ofthe two disks being parallel, and allock ing member mounted upon thethreaded portion of the body for moving and holding the movabledisktoward the fixed disk, whereby the material of the tube about theopening will 10 enter the space between the disks and about the reducedend of the stem and will be held uniformly when clamped between thedisks.

7 In testimony whereof I aflix my signature.

ALBERT ENNIS HENDERSON.

